Dr. Lucy Jones told San Diego officials they should considered replacement of aging water pipes and completing an inventory of local buildings, especially unreinforced brick buildings. Dr. Lucy Jones said water system is a city’s most crucial and vulnerable point in earthquake because the shake can cause cracks in the pipes and limiting a recovering community of its water supply.

For more info, please read the original article by San Diego Union Tribune:
https://www.sandiegouniontribune.com/news/politics/sd-me-earthquake-pipes-20181129-story.html